there are many ways to send emails from any computer to any recipient
mailTo as mentioned above
cdo.message
vbsendmail
search in this forum on any of the above

you do not need to display outlook, to the user, to send email, it can work in background

if you really feel you should use outlook, read the faq thread at the top of the Office development forum, on how to automate office applications

search in the office development forum for similar threads, i am sure there will be hundreds

what makes you think your teachers need some additional email sending program or will be prepared /allowed to install on there computers? most teachers use email templates and contact lists to send to whoever they wish, without having separate applications for each recipient