Power of the VOID...

"The International School of Kuala Lumpur provides an exceptional education that challenges each student to develop the attitude, skills, knowledge and understanding to become (silence) a highly successful, spirited, socially responsible global citizen."
I think that adding a silence after the word 'become' is the most effective place to create tension. When adding a VOID after 'become', the audience would anticipate the end of the sentence. They would wonder what the student will have the potential to be if they went to this school. The audience could ask questions such as "What is a student here going to be when he leaves ISKL? What could they become if they attended this school?" The audience might try to answer the questions they are themselves, thus creating even more tension.

One way composers could create tension and release in their pieces is through the lack of a musical element, such as the melody or the rhythm. This causes the listener to ask questions. The composer could hold the tension for as long as they desired, from a few seconds to more than a minute, then releasing by returning the element to the listener, adding the melody or the harmony of the music back into the piece.