A local discussion:
several area players really came on in their senior year of HS ( am sure this occurred in many places) and many of these dads made a fair point in thinking that if more competitive / top colleges recruited senior year their sons could be at different schools.
Related topic: 2015 kids came up in conversation who have already been cut at D1 schools,
others had their scholarships reduced by a large margin.
(the assumption was they were recruited/committed earlier and perhaps did not continue to improve)
One pro scout mentioned kids being cut in the fall of freshman year
and said his team calls it the 'fall massacre'.