More info on these film as requested.
imdb.com/title/tt0097236/
Dream a little dream (1989)
Bobby Keller aged 17 (Corey Feldman) is a high school student who, while taking a short cut through a backyard in his neighborhood, collides with Lainie Diamond (Meredith Salenger), whom he has been obsessing over recently despite the fact she is the girlfriend of his devious friend, Joel. At the time of the incident, an elderly man named Coleman Ettinger (Jason Robards) is performing a meditation exercise in the yard with his wife Gena (Piper Laurie), thinking that if he can enter a dream state voluntarily he will be able to live forever, thus being able to spend an eternity with his beloved wife. However, just as the Ettigners are on the verge of entering the "dream state", the collision forces a body switch between the four characters.
imdb.com/title/tt0097236/
Holiday Wishes (2006) (TV Movie)
Danni Hartford, party planner to the King family, wants to find her sister. Britney, the Kings' spoiled 15-year-old daughter, wants a horse. On a nearby horse farm, Rachel is treated like a servant by her foster siblings; all she wants is a real family. When all three girls make wishes at the Christmas dance, Britney and Rachel's souls switch bodies. But the girls soon find their new lives are not exactly what they pictured. When Danni discovers what has happened, she must figure out how to switch the girls back. IMB.
imdb.com/title/tt0482527/
It's a boy girl thing (2006)
Sorry, was misled by this. American 20 year olds playing 17 year olds. my fault.
imdb.com/title/tt0207275/
The 10th Kingdom (2000) (TV mini series)
See above!!!! Bloody americans!!!
imb.com/title/tt0118178/
Wish upon a star (1996)
starring Katherine Heigl (18) and Danielle Harris (16) The film focuses on two teenage sisters that magically swap bodies because of a wish made on a shooting star. They spend several days living each other's life, sometimes with the intent to sabotage the other's reputation and achievements, but they learn to appreciate and help each other before they finally return to their own bodies.