Carly McKinney, when contacted by local broadcaster 9News, admitted she created the now-deleted Twitter account CarlyCrunkBear (@crunk_bear) with a friend but claimed that it was meant to be satirical.
One post says, "Just got called Ms. McCutie. Points for being clever, however you are still jailbait," 9News reported.
Another post says, "Watching a drug bust go down in the parking lot. It's funny cuz I have weed in my car in the staff parking lot."
The first-year Overland High School teacher also apparently claimed to be stoned while grading papers.
The news station contacted McKinney Monday after a viewer alerted them to the questionable tweets, and the Twitter page was deleted minutes later, 9News reported.
McKinney claimed she didn't post the naked photos of herself and blamed an unidentified friend.
Moments after the broadcaster called her, the last Twitter post on the account was, "Local news station just called me...Tweeking out."
Officials with the Cherry Creek School District put McKinney on paid administrative leave while they continue their investigation, 9News reported Tuesday.
Students at the high school have made T-shirts in support of McKinney's reinstatement and people on Twitter have created the hashtag #FREECRUNKBEAR.
A school spokeswoman told the station that teachers are given social-media training and their rule of thumb is, "Don't put anything online that you wouldn't put on your classroom chalkboard."