Treat this as a different problem from a mid-year move in Class 4. Two reasons, and one open question.
First, the admission window is tighter. Third-party guidance describes restrictions increasing at Grade 10 and above, and an equivalency certificate from the Ministry of Education is reported to be required for Grade 9 and above, as set out in the placement section. Both of those are third-party sourced, and both mean the file takes longer.
Second, board-exam registration happens at the school, on the school's timeline. A child who joins after registration for Class 10 has closed at the receiving school is a conversation you want to have before you accept a seat, not after. Ask the school directly which registration deadlines apply to a joining student.
The open question is fees and identifiers. CBSE has been reported to exempt overseas schools, including those in the UAE, from the APAAR ID requirement for Class 10 and 12 board-exam registration, which otherwise involves an Aadhaar-linked identifier that many expatriate children do not have. We have not been able to verify that exemption directly from a primary source, so we state it as reported and unconfirmed rather than as settled. Similarly, we found no CBSE-published fee schedule in AED for overseas exam centres; the figures circulating are in rupees and come from secondary sources. Ask the school for its own current fee letter.
One more thing on the horizon worth knowing rather than acting on: CBSE has announced a Global Curriculum for its schools in the UAE and the wider GCC, with a planned rollout from April 2026, announced at the 31st Sahodaya School Complexes conference in Dubai and described at the time as still in draft pending stakeholder consultation (Gulf News, 5 November 2025). We searched CBSE's own circular archives and found no official circular announcing or detailing it, so treat it as announced but not yet documented by the board, and ask the school what it is actually teaching this year.