ABLE Featured Articles
What is SEN? Detailed explanation of the nine categories + support suggestions for SEN students!
In recent years, we often hear “SEN Special Education Needs”. What are the categories of SEN? What are the characteristics and needs of SEN students? This time, the Ailan Child Development Center will introduce the definition, categories, characteristics, etc. of SEN, and explain how parents and society can support the needs of SEN students!
What is SEN?
SEN is the abbreviation of “Special Educational Needs”. According to the definition of the Hong Kong Education Bureau (EDB), SEN refers to students who have difficulties in learning or daily life and need special education support. Common difficulties include: intellectual disability, language communication difficulties, lack of concentration, physical and mental illness, emotional management ability, etc.
Nine categories of SEN
1. Specific Learning Difficulties (SpLD)
Specific learning difficulties (SpLD) refer to a range of abnormal learning performance. Students with specific learning difficulties have normal intelligence, but only have difficulties in writing, reading, reciting, mathematics, and motor coordination, resulting in differences in learning performance and expectations.
Specific learning difficulties can be divided into dyslexia (dyslexia) and motor coordination disorder. The former has weaker cognitive abilities in learning words, reading and writing, while the latter has difficulties in perception and physical coordination. It should be noted that students with dyslexia or motor coordination disorder may also suffer from attention deficit hyperactivity disorder and other disorders. The following are common characteristics of people with specific learning difficulties:
Characteristics of dyslexia:
- Slow reading speed and frequent misreading and forgetting pronunciation
- Oral expression is better than written expression
- Unable to write down the words learned
- They often miss or write extra strokes when writing, or even reverse letters or words.
- They get tired easily when writing, and need to use more concentration to complete their reading and writing homework.
Characteristics of movement coordination disorder:
- Perception ability is good
- Poor control of large and small muscles, inflexible movements, difficulty in using scissors and holding a pen
- Weak organizational and self-care skills, such as difficulty buttoning, tying shoelaces, and organizing school bags
- Weak body balance and posture control, prone to tripping
- Writing speed is slow, often writing out of line and irregular
- Weak physical fitness
2. Intellectual Disability (ID)
Intellectual disability refers to a student whose intelligence level is significantly lower than that of his peers, resulting in difficulties in learning and adapting to life. The overall development of intellectually disabled students is also slower than that of their peers. The following are common characteristics of students with intellectual disabilities:
Characteristics
- Abstract and logical thinking skills
- Weak memory
- Short attention span, often distracted
- Weak verbal expression, inaccurate pronunciation, and limited vocabulary
- Poor coordination of limbs or hands and eyes, weak self-care ability
- Weak social skills
3. Autism Spectrum Disorder (ASD)
Autism is a disorder caused by abnormal brain development. Even after growing up, the intelligence level is different from that of peers. It mainly affects the social, language communication and behavior patterns of autistic people. In addition to general autism, according to the International Classification of Diseases Manual, 11th Edition (ICD-11), Asperger’s disease will also be included in autism spectrum disorders in 2021. The following are their common characteristics:
Characteristics
- Difficulty understanding other people’s emotions, unable to understand other people’s thoughts, intentions, feelings
- It is more difficult to master learning related to emotions, such as lyric writing
- Limited language expression, often using repetitive or stereotyped words and sentences
- Paranoid behavior patterns, such as insisting on taking a specific route or seat when riding a bus, and refusing to change current lifestyle habits
- Short attention span
4. Attention Deficit/Hyperactivity Disorder, ADHD)
Students with attention deficit/hyperactivity disorder have significant differences in attention, concentration, activity level, and emotional control compared to their peers, leading to learning and social difficulties. ADHD is more common in boys. The following are common characteristics of ADHD students:
Characteristics
- Poor concentration and easily distracted by the outside world.
- Too much activity, difficult to sit still in class
- Lack of organization
- Lack of organization
- Behave impulsively and do not consider the consequences before taking action
- Low patience, e.g. not completing work according to steps, cutting in line, etc.
5. Speech and Language Impairment (SLI)
Students with speech and language impairment can be divided into four categories, namely pronunciation, language, fluency, and voice problems. The following are their differences:
Pronunciation Problems
Pronunciation problems refer to students’ incorrect pronunciation, resulting in unclear speech, such as saying “long” for “walk” and “drinking water” for “drinking mouth”. Hearing impairment, cleft lip, cleft palate, brain spasm, developmental delay and other congenital defects may be the cause of pronunciation problems.
Language problems
When reading or receiving long and complex sentences, students have difficulty understanding and can only understand part of the meaning, resulting in irrelevant answers. Students with language problems have poor organizational skills, so they use inappropriate words in daily expressions, making it difficult for people to understand what they are saying. Autism, intellectual disabilities, and learning disabilities can all lead to language problems.
Fluency issues
Stuttering occurs when speaking, for example: repeating words multiple times in a sentence, speaking too fast or too slow, opening the mouth but not being able to speak, etc. Stuttering may be caused by genetic, psychological, physiological and other factors.
Voice problems
This includes hoarseness or even loss of voice. Common causes are excessive or incorrect use of the vocal cords by children, such as frequent loud screaming, which can cause polyps to form on the vocal cords, making the voice hoarse and loss of voice. If a child has a neurological disease, emotional distress, long-term respiratory disease, or cleft lip and palate, the voice may be too nasal and abnormal.
6. Hearing Impairment (HI)
Generally refers to abnormalities in the auditory system, which affect speech and communication abilities. The normal hearing threshold of an average person is -10 to 25 decibels. If a student’s hearing threshold is higher than 25 decibels, it is considered hearing impairment. Hearing impairment can be divided into the following five levels:
- Mild hearing impairment (hearing threshold from 26 to 40 decibels)
- Moderate hearing impairment (hearing threshold from 41 to 55 decibels)
- Moderately severe hearing impairment (hearing threshold from 56 to 70 decibels)
- Severe hearing impairment (hearing threshold from 71 to 90 dB)
- Profound hearing loss (hearing threshold of 91 dB or above)
Hearing-impaired students have the following difficulties:
- Students cannot fully understand the conversation when others speak softly or in a noisy environment.
- It is difficult to hear the conversation clearly if the speaker is out of sight.
- It is difficult to understand the content if the video or audio file does not have subtitles
- Can only hear close conversations and rely on lip reading to communicate, requiring the assistance of hearing aids.
7. Visual Impairment (VI)
If the better eye still has lower than normal vision even after wearing glasses or undergoing surgery, it is considered visual impairment (visual impairment). Ophthalmologists will assess the degree of visual impairment based on visual acuity and visual field angle, including mild, moderate, severe visual impairment, or complete blindness. The following are the standards for different levels of visual impairment:
- Severe low vision: Children with normal vision can see objects at 120 meters or more, but children with severe low vision can only see them at 6 meters, or their visual field is narrowed to 20 degrees or less.
- Moderate low vision: Children with normal vision can see objects within 60 to 120 meters, but children with moderate low vision can only see them at 6 meters.
- Mild low vision: Children with normal vision can see objects within 18 to 60 meters, but children with mild low vision can only see them within 6 meters.
Visually impaired students generally have the following common characteristics:
- Often knocking over things or injuring hands and feet for no reason
- Unwilling to move around
- No eye contact during conversation
- Often tilting head when looking at something carefully
- Difficulty describing the brightness, distance, volume and color of things
- When reading or copying, head needs to be close to the book to see clearly
- There is a situation of skipping lines when reading
8. Physical disability (Physical Disability, PD)
Physical disability refers to physical disability caused by trauma, central and peripheral nervous system diseases, and other congenital musculoskeletal system diseases, which restricts and hinders daily life. Common physical disabilities include: cerebral palsy, spina bifida, spinal muscular atrophy, muscular dystrophy, amputation, brittle bones, juvenile rheumatoid arthritis, etc.
9. Mental illness (MI)
There are many types of mental illness, the more common ones are anxiety, depression and obsessive-compulsive disorder, and some children may suffer from serious mental illnesses such as schizophrenia and bipolar disorder. Other mental illnesses include oppositional defiant disorder, Tourette syndrome, eating disorders, etc. Mental illnesses can cause abnormalities in children’s cognition, thoughts, emotions, perceptions, behaviors, physiological functions, etc., affecting their daily life, learning, and social life.
How many SEN students are there in Hong Kong now?
According to Education Bureau statistics, there are about 64,220 students with special educational needs (SEN) in the 2023/24 school year. Among them, the number of students with “specific learning difficulties” is the largest, with 26,960 students, followed by students with attention deficit/hyperactivity disorder, with 15,320 students.
What support does Hong Kong currently have for SEN students?
In addition, the Hong Kong Government is committed to providing comprehensive support for SEN students to ensure that they can grow up in a fair and inclusive learning environment. The current government support measures are mainly divided into school support and extra-school support. From pre-school education to secondary school stage, there are different support measures. Outside of school, we will also cooperate with parents and social forces to meet the special needs of SEN students.
There are currently 62 government-aided special schools in Hong Kong, including schools for mentally retarded children, schools for visually impaired children, schools for hearing-impaired children, schools for physically handicapped children, schools for group development and hospital schools. Small classes are used in the schools, and occupational therapists, physiotherapists, speech therapists, nurses, educational psychologists, school social workers, etc. are on hand to assist and care for SEN students in a multi-disciplinary manner.
SEN Student Support|Education Policy
The Education Bureau adopts a “dual-track” model to implement special education at the primary and secondary school levels to provide learning support for SEN students. If parents agree, SEN students can be referred to schools with more severely disabled students after being assessed by professionals so that the school can provide special care. In addition, the Education Bureau also implements an integration policy to encourage other SEN students with milder conditions to attend ordinary schools and receive a learning environment that is no different from that of ordinary people.

Support for SEN students|Public schools
The Education Bureau encourages inclusive education through “whole-school participation”, “home-school cooperation” and “cross-sector collaboration”. Through the establishment of Special Education Needs Coordinators, “Learning Support Grant” and “Support Grant for Non-Chinese Speaking Students with Special Education Needs”, ordinary schools can also meet the needs of SEN students, allowing SEN students to learn together with ordinary students, helping them to integrate into daily life faster, improve social skills, and promote the overall development of SEN students.
The following are the support services provided by public schools for SEN students:
- Learning Support Grant
The Education Bureau provides “Learning Support Grant” for students with special educational needs. Schools can use the funds according to the needs of each student, such as purchasing hearing aids, reading aids and other teaching aids. - SEN Support Teacher
When the “Learning Support Grant” amount reaches the target, additional regular teaching posts for special educational needs support teachers can be obtained. SEN support teachers can work in the Student Support Group and work with the Special Education Needs Coordinator and other teachers to support the implementation of school-based inclusive education and support students with special educational needs in all aspects. - Special Education Needs Coordinator
Each school will be assigned a SEN Coordinator to coordinate and monitor the school’s special educational needs services to ensure that the school can effectively manage resources and provide appropriate support for SEN students. - Cross-sector collaboration
The Education Bureau actively promotes collaboration between schools and professionals such as psychologists, speech therapists, occupational therapists, etc. to provide counseling and treatment services for SEN students.
SEN Student Support|Early Childhood Education
In addition to formulating individualized education plans (IEPs) and hiring SEN support teachers in kindergartens, the Social Welfare Department provides pre-school rehabilitation services, such as speech therapy and occupational therapy, to eligible kindergartens for children with mild to moderate disabilities under the age of six to improve their language expression ability and motor coordination. In addition, the Social Welfare Department also implements the “After-school Care Service Fee Reduction Scheme”. If parents are unable to take care of their SEN children who are attending primary schools after school, they can apply for full, half or one-third of the after-school care service fee reduction subsidy.
SEN Student Support|Out-of-school Support
The Food and Health Bureau has launched the “Jumping Together Pilot Program” to provide interdisciplinary community support services for children and youth aged 6-25 with attention deficit hyperactivity disorder and additional comorbidities, including: attention training, social skills training, life guidance, career counseling, parent training, seminars, etc., to help SEN students integrate into society.
In addition, the Hospital Authority has also implemented an interdisciplinary collaborative service model between pediatrics and child and adolescent psychiatry to provide medical and psychological support for children and youth with milder and stable conditions.
The Mental Health Advisory Committee has also launched the “Mental Health Project Funding Scheme” to provide additional support for SEN children and adolescents to help them cope with obstacles in daily life and learning.
How to support SEN children in daily life?
Understand and accept them
Parents need to first understand their children’s special needs, including their learning habits and ways of expression. If necessary, they can purchase auxiliary tools to help them learn. Parents should not label their children as “problem children”. They should accept their uniqueness and help them develop holistically and build self-confidence step by step, which will help them integrate into society more easily in the future.
Close communication with the school
Parents need to communicate regularly with school teachers, social workers, support teachers, etc. to understand their children’s life and learning situation in school.
Seek professional support
If parents encounter difficulties in caring for their children, they can seek professional social workers, speech therapists and other professionals for assessment and treatment. There are also various organizations in Hong Kong that provide support and treatment for SEN children to help them integrate into daily life.
AILAN Children’s Development Center Focuses on Supporting SEN Children
AILAN Children’s Development Center was founded by experienced ABA therapists. All team members have met the requirements of the American Behavior Analyst Certification Board. Through behavioral therapy, it helps SEN children overcome difficulties in daily life and learning.
AILAN’s professional therapists will first assess the children and develop a personalized learning plan. They will also provide 1-on-1 ABA center training, 1-on-1 ABA home training, ABA full-day classes, shadow teachers, expressive arts therapy, kindergarten support and other services to improve the speech, self-care, and social skills of SEN children.
Frequently Asked Questions
Do SEN students have to attend special schools?
Not necessarily. The Hong Kong Education Bureau promotes the principle of “inclusive education” and hopes to help students with special educational needs integrate into mainstream schools and learn with ordinary students. The school will provide appropriate support and counseling. Unless the disability is serious, SEN students can attend ordinary mainstream schools.
What is the difference between special education and inclusive education?
Inclusive education
SEN students are arranged to attend mainstream primary and secondary schools. There will be general students and SEN students in the class. The school can also set up special SEN classes according to the situation. The school will have a coordinator to help plan inclusive education and support students with special learning needs in the school.
Special Education
SEN students attend special schools, including schools for mentally retarded, visually impaired, hearing impaired, physically handicapped children, schools for group development and hospital schools, usually for students with more severe disabilities. All students in the school are SEN, and small classes are used to provide appropriate support for each school. The teachers and courses of special schools are designed for SEN, and occupational therapists, speech therapists, etc. are provided to take care of the needs of students.
Data reference
- Education Bureau “Special Educational Needs”
- Inclusive Education and Special Education Information Website