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.
Unlike most birds, it has nearly solid bones, which makes it heavier and helps it dive for fish. The Common Loon is born with brown eyes, which start to turn red later in its first year. Because its legs are located so far to the rear of its body, the water bird is unable to walk easily on land.