British Astronomy and Astrophysics OlympiadBAAO

Yes. The official page states that international schools can sit Astro Round 1 at the same time as UK schools — 23 to 27 November for the 2026 cycle. Entry still goes through a teacher registering the school on the BPhO platform rather than students signing up themselves; if a school has not run it before, the physics teacher can email the organisers directly or register through the partner ASEEDER.

No. The organisers state the competition is syllabus-independent and that any specialist detail a question needs is given in the question itself; what it really tests is applying physics in astrophysical settings. Only one optional long question in Section 2 covers observational astronomy, and the official site publishes a dedicated self-study guide for it — a student who has never taken an astronomy course can prepare from scratch.

Yes, and the organisers encourage it. The two share an entry platform and calendar — BPhO Round 1 on 12 November and BAAO Astro Round 1 on 23 to 27 November, a week or two apart. A student who has already finished AP Physics C saves real time on this overlap, since one preparation effort can produce results on both tracks at once.

The organisers describe it as a paper that can stump many A* candidates. Astro Round 1 runs two hours: Section 1 is a bank of short questions capped at 40 marks, and Section 2 offers four or five 20-mark long questions from which students pick two. BAAO does not publish a Round 1 cut score; the Astro Round 2 award boundaries listed on this page give a sense of the scale.

The official price for Astro Round 1 is £15 per student, with four free papers for UK non-fee-paying schools, and every subsequent round is free. On age, Astro Round 1 is open to Year 13 and below — U.S. grade 12 and below — and is aimed mainly at Years 12 and 13, equivalent to U.S. grades 11 and 12, though younger students may attempt it. International schools entering through ASEEDER or ASDAN pay that partner's published rate instead.

The ceiling is an Astro Round 1 certificate. Astro Round 2 is invitation-only for students eligible for the UK team, the organisers state plainly that there is no paid entry route, and the Oxford camp and UK IOAA team are further out of reach still. That said, an Astro Round 1 result is a genuine international competition credential to list, and it reads well for applicants to physics, astronomy or aerospace programs.

From the official calendar: the Astro Challenge runs at a school-chosen time between September and December 2026; the Junior Astro Challenge from 30 October to 20 November; Astro Round 1 from 23 to 27 November, with scanned scripts uploaded by the end of 27 November; and Astro Round 2 on 26 January 2027. A student who wants to enter should confirm with the physics teacher early in the fall whether the school will register, rather than waiting until close to the deadline.

Start with the official BAAO syllabus and the two self-study guides, one on astrophysics and one on observational astronomy, and drill the astronomy-specific tools — magnitudes, distance modulus, logarithmic work — until they are automatic. The organisers advise at least two or three full past papers before checking solutions, and the short items in past Astro Challenge papers are the best rehearsal for Round 1. EDUBUS is based in Irvine and runs small in-person classes alongside a synced online track, which is one option for working through these tools systematically.