The DEMO version only includes 10 pages:
http://seab.gov.sg
http://seab.gov.sg/home/examinations/psle.html
http://seab.gov.sg/home/examinations/gce-n(t)-level.html
http://seab.gov.sg/home/examinations/gce-n(a)-level.html
http://seab.gov.sg/home/examinations/gce-o-level.html
http://seab.gov.sg/home/examinations/gce-a-level.html
http://seab.gov.sg/home/services/training-and-consultancy.html
http://seab.gov.sg/home/services/academic-publications.html
http://seab.gov.sg/home/services/statements-of-results.html
http://seab.gov.sg/home/services/aeis.html

It is possible to download these free files and install them on your server, so you can test how the site works.
Visit https://www6.waybackmachinedownloader.com/website-downloader-online/scrape-all-files/ to buy a fully functioning site.
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