Set Up Student Internet Safeguards

I'm looking to secure my students' internet access by blocking all inappropriate content. This includes:
- Adult content
- Violence
- Gambling sites
- Hate speech and discriminatory content
- Websites related to illegal drugs
- Sites providing information on weapons
- Phishing and fraudulent websites
- Social media platforms during school hours
- Sites known for distributing malware
- Online dating sites and apps
- Websites that facilitate software piracy

I need a professional who can implement comprehensive web blocking. Additionally, I would appreciate a system that allows for future customization of these blocking rules, as I'm not certain if fixed rules will suffice in the long run.

Ideal candidates for this project should have relevant experience in setting up internet safety measures, preferably in an educational context. Knowledge of user-friendly systems for future customization is a plus.

Blocking rules should encompass both computers and mobile devices. Include blocking rules for tablets.