Hip Hip Hora!, known as The Ketchup Effect in most English-speaking countries, is a 2004 Swedish teen movie, directed by Teresa Fabik.

Plot

Friends and future seventh-year (upper primary school) students Sofie, Amanda and Emma anxiously await the start of term. This is virtually no major change education-wise, but a social watershed moment when cliques come into play, more or less serious relationships start being developed, and students, to hear them tell it, leave behind childish things to move into their teens; certainly the three girls are confident in how grown up they now are.