Avoid unless you want to be extremely frustrated.
I wanted to complete a certificate in events management, and I never had a more frustrating experience in my life. Unless you can understand all the resources and assignments without any help, you're screwed because you'll need to email for help (if they ever respond).
I often ran into grammar/spelling mistakes across the modules and many of the resources were broken URLs and outdated information. You'd have to hope the website was working too, because often you weren't able to access your assignments or upload them. Also, don't expect any communication from Open Colleges, apart from automated messages letting you know your course will expire in X amount of months.
Now for the biggest problem that left me pulling my hair, work placement. DO NOT rely on them to help you in any way. I approached OpenColleges for support after having no luck finding work placement, first they told me to look for virtual events (as covid had sent NSW into lockdown) but then was told by my support officer that they would not be contacting any potential host organisation because of covid. Also, I never received any information on how the process worked, and I just felt more confused every conversation I had with them.
As my course was reaching expiration, I also asked about a possible course extension. First they told me to apply for one through the website, which didn't work so I had to contact them directly. Then I was told that my extension was being processed because of my emails. More confusion.
With covid finally easing, and small events going ahead, my 'support' officer finally had some potential organisations. Of course, now they insisted that I contact them which was different from what they told me initially. On top of that, one didn't fit the criteria for work placement and two were in completely different states from me (and no, they were not doing virtual events or ones near me). So out of 7 potential organisations they sent me, 3 weren't suitable and the rest weren't looking for work placement students.
I ended up not even completing my course, and when I asked for my transcripts in case I did want to complete it in the future (definitely not with Open Colleges), they said they weren't able to. Lucky I was able to sort this out with TAFE NSW.
So, learn from my mistake and go somewhere else. Because the only thing I learnt from my 2 year course, was that Open Colleges value profit over education.