Question Unless otherwise posted, the speed limit in school zones is: Answers 45 mph. 35 mph. 25 mph. 15 mph. Explanation In a school zone, the speed limit is 25 miles per hour. If a different speed limit is posted, follow the posted speed limit. Pass your DMV Written Test with flying colors Take me to the cheat sheet Oklahoma This questions appears in the following tests: Oklahoma Practice Test 9 Oklahoma Practice Test 19