No and if you read my previous post you will see I don't. I am pointing out to OP how difficult these issues are to deal with.
They are not unusual issues. I work as a Senior School Improvement advisor for a local authority and one of my responsibilities is Safeguarding.
13 year olds having sex is not unusual at all. They have free access to porn and have grown up in a society where the use of online porn is now very common in homes and access to it is instant on smartphones - I don't know a teenager without a smartphone. Teenage boys, in particular, are avid porn users but girls use it too. They regard it and what they see in it as normal and expected of them. They are aware of sexting and many feel under pressure to do it.
Something being illegal does not mean it is policeable- whoever is doing the policing. Boys bluetooth sex videos and photos. Most are downloaded from the internet, or they have been sent them by another boy . However, they video themselves/each other at parties at weekends or even with their girlfriend and some then share them. Once shared they are impossible to recall and keep track of.
Schools deal with this and the daily teenage dramas of relationships, teenage pregnancies, pregnancy scares, drugs, weapons, mental health issues etc. You have no idea of the huge range of issues that now roll into schools.
Some instances are much more straightforward to deal with than others but they are all more complex than you seem to think they are. Schools have safeguarding rules to follow. They should be taking advice and working with police and safeguarding teams at the local authority. However, issues are prioritised by the police. Read my previous post, in the thread, about this and get off your high horse.
Your notion of 13 years olds not being involved in sex is risible.