Hi,
I have reviewed your requirement & it seems we have already discussed this software. I believe instead of teacher they were managers & instead of schools these were companies. Sorry if its not same project but still we can build this. I understand you want online test application built with added functionalities. We have great experience developing online test application with backend management features. We will built the features for Teacher/Manager to manage the course & add questions in them. Students can attempt the questions & if they don't reach the passing marks they will be shown the incorrectly answered questions again so that they can re-attempt.
After the student passed the exam they will be receive certificate via email. If its same project then I remember we have discussed about attaching the read material with each question so that they can study that portion of training & can answer the correctly this time.
Hope to discuss & get started. I guarantee you 100% satisfactory work.
We are a reputed IT company. We have great experience developing bigger projects such as Ecommerce, crowd funding, crowd sourcing, Job posting with bid feature - clone of hired, Gadget purchase website, Fitness trainer portal, Fitness tips & management system, Complete business process management, etc. We specialize in developing any customized solution as per requirement.
Our technology expertise is in PHP, MySql, Angular.js, jQuery, Boostrap, SASS, Ajax, JavaScript, HTML