Few experiences can have more impact than a study abroad religious education. If the money is available, Christian and Jewish schools are encouraged to take students on field trips to Jerusalem in Israel. Islamic schools might be encouraged to take students to Saudi Arabia, and Hindu students might strengthen their faith by visiting the Holy River Ganges in Veranasi. Study abroad religious education also frequently has the benefit of showing students what a fully religious lifestyle might look like, providing an exemplification of religious principles that may have felt too abstract in the past.
Each of the major religions has something resembling a core written text, and comparing texts to one another would strengthen a student's understanding of their own religion, while also helping them develop new ways of thinking. Christians have the Bible, Jews the Torah, Muslims the Qu'ran, Hindus the Bhagavad Ghita, and so forth. Comparing these texts to one another could also help breach some of the cultural divides between the faiths. For example, teaching Muslims that the Qu'ran states that Jews and Christians are "people of the book" and also deserving of a right to enter heaven is important.
Another important method for teaching religion would be giving students problem scenarios with which they must apply religious precepts to solve. For example, students can debate how a person who lies to protect an innocent from being killed, violating two of the Ten Commandments should be evaluated under Christian doctrine. Teaching students to apply their religious education to real world scenarios would help cement in their minds some of the most important religious precepts.
Community service has always been a central role of religion, and requiring that students work at their local place of worship or a local religious charity will help instill some of the more emotionally powerful principles of their faith. For example, Christianity was first developed amongst the poorest of the world and continues to resonate in some of the poorest places around the world. A student's activity with Christian poverty-fighting organizations would ensure that student connects with the roots of the Christian faith.