Sounds like they have none specialists teaching the subject which is not always ideal. In the school I was teaching at the students had a consistent teacher even if they weren’t specialists. Do they rotate teachers for topics? I wouldn’t normally teach sex Ed until I had built up a relationship with a class. I left a year and half year ago.
My school was considered more conservative in our LEA. We tended to teach topics at least on year later than LEA suggested. Porn and anal sex were on our scheme of work but not until year 11. Porn would be taught within the contexts of how does media portray unrealistic expectation and what impact does that have. We’d do a starter activity with various scenes you might see in everyday films eg wedding, shopping with friends, going to school and ask if they were realistic and then ask how might they use this knowledge to be critical of porn and consider how porn may impact on how individuals may view their own sex life and body confidence. We might show clips of normal films but obviously not porn. We did lessons from year 8 on sexting, with focus on body image, emotions, consent, controlling your own media and the law. Anal sex was taught within the context of attitudes and myths about sex, for example we would ask students in friendship groups to put a statement along a line to show if they agreed or disagreed with the statement, I would wandering around the room and discuss it within the small groups and then I would ask people to volunteer to share the information with the class and tell me what else had been said to me without name students if any key points or themes weren’t volunteered to be shared with the class. Interestingly females students always strongly agreed that m bb males want anal sex while the males thought only a few people would want to try it.
Porn and anal sex may have been raised in earlier years by other students mostly as an anonymous question in the box. My answers would be factual eg anal sex is putting a penis in the rectum (hole people poo from) and it has an increased risk of transmitting STIs.
I would ask for a meeting with the head of PSCHE to discuss the sex and relationships scheme of work. As a parent I would want to know how much time do they devote to relationships, this includes all relationships, what do they cover in each year, do they cover consent, where to get help for specific issues now and as adults, domestic violence and coercion. Are students just told stuff or do they explore the information and issues? Are they repeatedly reminded who is school they can seek for help? Check out the new government guidelines too.