According to the Department of Education 180 is the minimum number of instructional days California requires of its public schools. The 180 days doesn`t include in-service days for teachers.
Loon, Arctic also Black-throated Loon also Black-Throated Diver Gavia arctica Found: North America (Alaska), Europe, Asia. The Arctic Loon has white underparts. Breeding has black back with white bars; black face; black sides of throat with white stripes; dark green throat.
Since 1978, the Sigurd Olson Environmental Institute has recorded information on the common loon. A loons location of breeding, number of adults and young, and time of residence on particular waterways are crucial for determining the loons status and survival rate in Wisconsin.