a 28-year-old teacher has been charged with soliciting sex with a minor and possession of marijuana .
the spanish teacher , who has since lost her job at hefner middle school , allegedly planned to invite the boy to spend the night with her as she was house-sitting ` so they could get high and have sex ' .
the teacher allegedly planned to invite the boy over to stay the night so they could have sex on february 13 , but authorities learned of the relationship before that was able to happen .