"semester ends" is a correct and usable phrase in written English.
You could use it to refer to the end of a school semester, for example: "I can't believe that the semester ends next week!".
When the semester ends, Mattioli will be racing almost every weekend.
The rest of the semester ends up being a super-duper clusterfuck.
By the time the semester ends (grimly), you're sleeping with a mouth guard to cure TMJ.
Judy Eurich, a college spokeswoman, said the improvements would occur after the semester ends.
The students move out when the semester ends in December and return to their old dormitories in January.
The employees, who went on strike Sept. 8, will return to work on Thursday, officials said, about a week before the semester ends.
My trip was scheduled for the end of May, a couple weeks after the semester ended.
He'd been on-Island since before the semester ended.
When the semester ended, she knew, her job would end, as well.
The daytime workouts began in May, two days after the semester ended.
When the spring semester ended, he went in and told Jack Stephenson that he was retiring.
