1. In 1910, Oklahoma City's first public high school, Classen High School, opened its doors to students. The school remains a prominent institution in the Oklahoma City public school system today.

2. In 1933, the city of Tulsa held its first annual Oklahoma State Fair. The fair, which is now held in Oklahoma City, continues to be a popular event for the state and draws visitors from all over.

3. In 1960, the town of Lawton was hit by a tornado that caused widespread damage and claimed several lives. The tornado remains one of the deadliest and most destructive in Oklahoma history.

4. In 1979, the Oklahoma State Regents for Higher Education officially established the Oklahoma State University Center for Health Sciences. Today, the center is one of the foremost medical education and research institutions in the region.

5. In 2010, the Oklahoma legislature passed a controversial law banning the use of Sharia law in state courts. The law was later struck down by a federal judge, who ruled that it violated the First Amendment's Establishment Clause.