Thank you all for the thoughtful responses. I will inquire locally about why reconciliation was dropped, good advice.
I also apologize that I was not clear enough in my original posting: I am referring to the special reconciliation services held before Christmas and Easter, not the regular availability of confession during school hours. I THINK this school used to have a reconciliation service incorporated into their Friday Mass the week before Christmas and Easter, but has discontinued Christmas/Easter reconciliation service at the school, in favor of the parish wide reconciliation service later at night.
Judging by your responses, I expect that it is common to see Catholic schools that do and that do not offer Reconciliation during the school mass. I do not know whether other area parochial schools have Christmas/Easter reconciliation for their students, or for how long this school/parish has not been having reconciliation during school.
This Christmas, a Reconciliation service was offered on one night in this Parish, and on another night of the week in the adjacent Parish, so there were opportunities to attend Reconciliation outside of school. It was nice however having reconciliation service in school for the kids, as attending the parish wide reconciliation on a school night can be difficult–particularly for the younger kids who have homework and early bedtimes. (The teachers did not provide a break in homework on the night of the parish-wide reconciliation service)
Happy New Year Blessings to all.