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.
Best Answer: The loon (N.Am.) or diver (UK) is a type of aquatic bird found in many parts of North America and northern Europe. A loon is the size of a large duck, to which it is unrelated; its plumage is largely grey or black, and it has a spear-shaped bill. The loons compose a genus (Gavia), family (Gaviidae), and order (Gaviiformes) all their own. The mallard duck is scientifically classified as anas platyrhynchos.