Munyandiko ziwe yarakoresha amajambo abavyeyi bamwe bamwe bafata nk'igishegu, kandi yarakoresha namajambo yogutukana ari mwishure. The previous text is in Rundi. Here is a translation to Chinese (Traditional):
他在筆記中使用了某些家長視為髒話的字眼，據說他在課堂上也會講粗話。