https://content.industrydive.com/powerschool-whitepaper-uncovering-the-hidden-costs-of-disparate-k12-it-systems/

Few, if any, K-12 school systems have the luxury of purchasing a complete IT infrastructure system all at once so that it’s perfectly integrated from the start. Instead, most districts add IT components gradually as their budgets allow. One system for managing student data, another for a learning management system, and so on. During this slow build up, technology evolves, district leadership and staff change, and the district’s needs change.