OKAY	=	100 points	presentation was made
SKIP	=	80 points	student declined presentation
NULL	=	60 points	student was absent

Month	Mon	Wed	Fri
January
	03	05	07
	10	12	14
	17	19	21
	24	26	28
	31
February
		02	04
	07	09	11
	14	16	18
	21	23	25
	28
March
		01	03
	06	08	10
	13	15	17 NULL
	20	22 SKIP	24
	27 SKIP	29	31 SKIP
April
	03	05 OKAY	07 NULL
	10	12	14
	17	19	21
	24	26	28