Hi there! Yes, some schools teach it, mostly private schools. That is, not the state run schools but the ones run by the churches (various) or by private organisations. The school I went to back in the 70s required study of at least one language, and Bahasa Indonesia was one of the choices available. The others were French German Latin & Spanish at that time - nowadays there's more focus on Chinese and Japanese. There's also been a lot of tourism from Australia to Indonesia for quite some time now - at least since the 70s and probably before. Some fairly strong trade links - one category of cattle for sale in northern Australia are officially classified as 'Light Indonesian Steers' and the price is reported on state media once a week.