There are a number of potential disadvantages to teaching religious education in primary school. These include:

• The potential for indoctrination. When religious education is taught in a way that promotes a particular faith, it can lead to indoctrination. This can be harmful to children, as it can prevent them from forming their own beliefs and making their own choices about religion.
• The potential for conflict. In a pluralistic society, where people of different faiths live and work together, teaching religious education in a way that favors one faith over another can lead to conflict. This can be harmful to the social fabric of the community.
• The potential for confusion. Children are still developing their understanding of the world, and they may not be able to understand complex religious concepts. This can lead to confusion and misunderstanding.
• The lack of qualified teachers. Teaching religious education requires a deep understanding of different religions and the ability to teach about them in a neutral and objective way. Not all teachers have this ability, so teaching religious education in primary school can be challenging.

It is important to note that these are just potential disadvantages. There are also potential benefits to teaching religious education in primary school, such as helping children to develop their understanding of different faiths and cultures. Ultimately, the decision of whether or not to teach religious education in primary school is a complex one that should be made on a case-by-case basis.

Here are some additional points to consider when evaluating the potential disadvantages of teaching religious education in primary school:

• The age of the students. Younger students may be more susceptible to indoctrination, while older students may be better able to understand and evaluate different religious beliefs.
• The religious makeup of the community. In a community where there is a diversity of religious beliefs, teaching religious education in a way that favors one faith over another can be particularly harmful.
• The availability of qualified teachers. If there are not enough qualified teachers to teach religious education in a neutral and objective way, then it may be better not to teach it at all.

Ultimately, the decision of whether or not to teach religious education in primary school is a complex one that should be made on a case-by-case basis. There are potential benefits and disadvantages to consider, and the best decision will vary depending on the specific circumstances.