ADHD and Autism Assessment in Hong Kong: Public Pathways, Private Costs, and What Comes Next

You've noticed something. Your child's teacher has raised concerns. Or the paediatrician mentioned SEN categories during a check-up and you walked out with more questions than answers. Getting a formal diagnosis for ADHD or autism in Hong Kong is the step that unlocks school support — but the process is not obvious, and the waits can be painful.

Here is how the assessment system actually works, what it costs, and what you need to do with the results once you have them.

The Public Route: Child Assessment Centres and the 6-Month Pledge

The Department of Health runs a network of Child Assessment Centres (CACs) that provide developmental, psychological, and educational assessments for children. This is the public pathway most families try first because it is free.

The government's stated target is to complete assessments within six months of referral — known as the "6-month pledge." In practice, only 67.7% of cases currently meet that timeline. For roughly one in three families, the wait extends beyond six months. For complex cases or children referred late in primary school, delays can stretch considerably longer.

Referrals to CACs typically come through one of three channels: your child's paediatrician, the School Medical Service (which conducts routine assessments at Primary 1), or the school's SENCO. Private GP referrals are also accepted in some cases. Once referred, your child will go through a multidisciplinary assessment process that may include a paediatrician, educational psychologist, and speech therapist depending on the presenting concerns.

ADHD and ASD (autism spectrum disorder) are both formally recognized SEN categories under Hong Kong's educational framework. A diagnosis from a CAC carries official weight — schools are required to use it as the basis for deciding which tier of support your child needs.

The critical limitation of the public route is not just timing. CAC reports are sometimes brief and may not include the level of functional detail needed to negotiate meaningful school adjustments. If you need a report that describes exactly how your child's profile affects learning across different classroom contexts — the kind of detail that justifies Tier 3 individualized support — you may find that supplementing with a private assessment is worthwhile.

The Private Route: Costs, What You Get, and Who Does It

Private ADHD and autism assessments in Hong Kong are conducted by clinical psychologists and educational psychologists in independent practice. A comprehensive private assessment typically costs between HK$10,000 and HK$17,500 depending on the assessor's credentials, the scope of the battery, and whether a detailed written report with recommendations is included.

For ADHD, a standard assessment typically includes cognitive testing (often the WISC-V), continuous performance tasks, behavioural rating scales completed by parents and teachers, and a clinical interview. For ASD, the assessment is usually more extensive — it typically includes ADOS-2 administration, structured clinical observation, developmental history, and cognitive profiling. ASD assessments at the comprehensive end of the market take longer and cost accordingly.

When choosing a private assessor, confirm: (1) whether they are registered with the Hong Kong Psychological Society, (2) whether they have specific experience assessing Chinese-speaking children, and (3) whether their written report follows a format accepted by the Education Bureau for SEN support applications. Not all private reports are created equal — a thin letter from a general practitioner carries far less weight in a school SEN meeting than a full psychoeducational report with specific accommodation recommendations.

Some private assessors also offer school consultation as an add-on — a meeting with the SENCO and class teacher to walk through the findings and their implications. If your child is about to transition between schools or enter a stage where formal support documentation becomes critical (such as approaching HKDSE), this is worth paying for.

What the Diagnosis Means for School Support

A diagnosis of ADHD or ASD does not automatically generate an IEP in Hong Kong. It is important to be clear-eyed about this: Hong Kong's system does not give parents a statutory right to demand an individualized education plan. What the diagnosis does is place your child formally within Hong Kong's SEN framework, triggering the school's obligation to assess their support needs and determine their tier of intervention.

The 3-tier support model works like this. Tier 1 is quality first teaching — good classroom differentiation that all teachers should be providing regardless of SEN status. Tier 2 is "add-on" targeted support: small group interventions, learning support pull-outs, withdrawal programs. Approximately 59,000 students across primary and secondary schools currently receive Tier 2 support. Tier 3 is intensive, individualized support — the level at which an IEP or Individual Support Plan (ISP) is expected. Only about 4,274 students are formally at Tier 3 across the whole system.

For a child with ADHD or ASD, the question after diagnosis is not "will my child get an IEP" — it is "which tier will the school assign, and is that appropriate?" Many students with diagnosed ADHD are placed at Tier 2 when their functional profile genuinely warrants Tier 3. The school's determination is influenced by class size (30–35 students in most mainstream schools), available EP time, and the Learning Support Grant allocation the school is drawing for that student's SEN category.

If you believe your child should be at Tier 3 but the school is keeping them at Tier 2, the assessment report becomes your primary advocacy tool. A report that explicitly describes the intensity of support required — not just the diagnosis, but the functional impact across learning, behaviour, and social engagement — gives you a factual basis for challenging the school's tier assignment.

The Hong Kong Special Ed Blueprint covers how to read tier decisions critically, what questions to ask the SENCO, and how to document your concerns in writing when the school's response is inadequate.

After Assessment: Immediate Steps

Once you have a report — public or private — there are four things to do immediately.

First, request a meeting with the school's SENCO. Do not wait for the school to contact you. Share the report and ask them explicitly: what tier will my child be placed at, and when will the support plan be written?

Second, ask whether the Educational Psychology Service (EPS) has been or will be involved. The school-based EPS provides EP time to schools through the Education Bureau — but EP time is rationed and schools manage their own queues. A formal diagnosis accelerates EP allocation.

Third, keep a copy of every document. The SEN records management system (SEMIS) transfers information when children change schools, but the transfer is not always complete. Parents who hold their own copies of assessments, support plans, and correspondence are better protected.

Fourth, if your child is in secondary school and approaching HKDSE, begin the exam accommodation application process immediately. Applications to the Hong Kong Examinations and Assessment Authority (HKEAA) for special exam arrangements must be submitted approximately two years before the examination. Assessment documentation is required. Starting late makes accommodation approval significantly harder.

Understanding how each of these steps fits into the broader system — and what your rights are when schools are slow to act — is exactly what the Hong Kong Special Ed Blueprint is designed to help you navigate.

Hong Kong Special Ed Blueprint →