It is no secret that DSA is a multi-million dollar business opportunity especially in sports
1. Many retired sportsmen are coaches of secondary schools and JCs.
2. Rich parents sent their kids to private sport schools run by these people for a few years or just months in Primary School
3. Many of these kids don't play the games well and can't win anything in national competitions. The fees are very high, what's the catch?
The coaches do not select the DSA students but many can recommend school teachers to recruit these rich kids as ideal, perfect "sparing/training opponents" for the best sports students in the CCA. It is a lame reason and some coaches threatened not to coach the school if the teachers don't heed their advice.
This is why parents protest that in top schools accepts many weak sports students through DSA program. AGO just need to review the acceptance of these students who hardly won anything respectable in their primary school but these are rich kids, so nobody will touch them.
Flagged sports include fencing, water polo, bowling, racket games and team sports.