1. In 1855, the first public school was established in San Francisco. The school was called the McLaren Grammar School and was located on Powell Street. Today, the school has been relocated to a different location and is known as the Jean Parker Elementary School.

2. In 1919, the first transcontinental airmail service began in California. The first flight took off from San Francisco and ended in New York City. The flight took around 33 hours to complete.

3. In 1951, the 22nd Academy Awards ceremony was held in California. The ceremony was held at the RKO Pantages Theatre in Hollywood and was hosted by Fred Astaire.

4. In 1986, the Space Shuttle Challenger disaster occurred in California. The shuttle exploded shortly after takeoff from the Kennedy Space Center in Florida, killing all seven crew members on board. Among the crew was Ellison Onizuka, the first Asian-American astronaut.

5. In 2013, the 85th Academy Awards ceremony was held in California. The ceremony was held at the Dolby Theatre in Hollywood and was hosted by Seth MacFarlane. The movie "Argo" won the Best Picture award.