A Match Made in High School is a pretty short read. Light-hearted and amusing, it's definitely something you can chill out too. It's pretty hilarious as well, what with all the pranking but at times, there's actually serious moments. 
 Our main character Fiona is a likeable character but dwelve deeper, and you'll see that she's not that nice of a person. She does learn a lesson or two, and she does grow up a little so in that aspect, the book definitely doesn't come across as preachy or anything. 
 There's a variety of characters here, just like in a high school but since it's a short read, there really wasn't much time for each character to be explored fully, which is a shame. Still, A Match Made in High School is an excellent read, a great way to kill a couple of hours. :D