Zoom In: Highschool Circa '65

Yesterday, I watched the second half of the classic movie, Highschool Circa '65. But still, I got its plot.

Charo Santos, & Eddie Rodriguez were the main casts. Others were merely minors-the students, the teachers, janitor, wife, so forth and so on.
The film was about miserable graduating students, particularly the 4th yr. section 1, whom before had typical teachers (i.e. old and strict). Until Ms. Pengson (Santos) came, who was young, delicate, and composed, that changed their lives forever.
Rodriguez (I forgot his character name) had feelings for Ms. Pengson, but rumors spread inside the campus that almost wreck Pengson's teaching career. She got mad, especially when she caught that her c0-faculty members were the one who spread & ruined her name.
Students were dismayed to what the principal did. So they made some actions, enough to worn out, both in literal and figurative sense, all their substitute teachers-by putting traps & glue at the teacher's chair, and stealing the wig of their librarian.
Rodriguez's wife, played by Liza Loren, was the reason why this man was diverting his mind and heart to Pengson, because he thought that he is no longer loved by her wife, who left him and her daughter during Christmas eve-she chose other important things rather than choosing her own family. But Liza, in the end, admitted her faults (plural).

The film ended in a happily-ever-after kind of way.
Guess what happed to Ms. Pengson?
Rodriguez's wife reconciliated with her; she attended the graduation; the principal offered her to go back in school; when Rodriguez and her eyes met, the man just ignored her (so that, I guess, there would be no more problem that could possibly arise).
It's "a happily ever after" after all, right?