Here's an essay introduction that my students and I wrote:
It is true that many high school leavers decide to take a gap year before starting university. While there are several benefits for students who do this, there are also some possible drawbacks.
Try writing a one-sentence conclusion for the same essay.
Start with "In conclusion", and then paraphrase the introduction above.
(A 'gap year' is a year of work or travel between high school and university)