Finding the most recent value change

Hello BI Community:

I am trying to create a calculated column that indicates if data for each school is the most recent based on a completion time.

The current column, isLastEntryforDay is calculated with this code:

isLastEntryforDay = 
	if((TenDayCount[Completion time])=MAXX(
		FILTER(
			TenDayCount,
			TenDayCount[School]=EARLIER(TenDayCount[School])
		),
		TenDayCount[Completion time]),
	true(),
	false()
	)

However, I really want it to return true if it is the last entry based on the Day column.  Not overall. 

I would be grateful if anyone could help me modify the DAX (or provide an alternative solution) to accomplish this.

Thank you,

Michael