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% replaces any number of letters (la% - lake, lamp)_ replaces one letter (ca_ - car, cat)

Crossword clues for School support grps. 4 letters:

PTAS: School support grps.
PTAS: Grade-school support grps.
PTAS: High-school support grps.
PTAS: Public school support grps.
PTAS: Grps. that provide school support