S1-1 SCHOOL

 S3-1 SCHOOL BUS STOP AHEAD

S4-1 TIME OF DAY (PLAQUE)

 S4-2 WHEN CHILDREN ARE PRESENT (PLAQUE)

 S4-3 SCHOOL (PLAQUE)

S4-4 WHEN FLASHING (PLAQUE)

S4-5a SCHOOL SPEED ZONE AHEAD (SYMBOL)

S4-6 DAY(S) OF WEEK (PLAQUE)

 S5-1 SCHOOL SPEED LIMIT

 S5-2 END SCHOOL ZONE