Hi,
I had the demonstration of the WCBS portal and didn't like it at all. We use a company called MSO.net, who provided us with MySchoolPortal. Our uptake has been about 80% in less than a year and our parents comment positively. It's intuitive to use and reasonably priced. I'd definitely recommend you take a look.
https://www.mso.net/education
Hope this helps.