Ah, home sweet Muggle Studies classroom. Jk. Today you are meeting by the lake. Hopefully you remembered. As, er, showing up late has dire consequences this year. Maybe it helps that you're slotted for a later lesson today (an anomaly for Muggle Studies).

Anyway, AnYwAy, ANYWAY.

As you make your way towards the lake at 4 PM, you'll find Professor Finneas Schmoe in all his noodle-y glory, twitching standing in the middle of a field that is marked off by a HUGE circle of traffic cones. Hm. Would you be learning about laws of the road today? Mayhaps. Schmoe looks poorly and has very little energy, but he tries his best to give you an encouraging smile as you make your way towards him. While the Inquisitorial Squad is nowhere in sight, you've come to learn that they're always closeby should you step out of line.

There aren't any chairs or bean bags to sit on so it's clear that you're expected to stand within the coned off circle for the time being. Whilst you're standing around waiting for class to begin, you may notice a fenced off area at one end of the field and a pile of nets and ropes (and a closed box full of things and stuff) behind Schmoe. Errrr.... be sure to mind the mud. It had, er, rained last night but... The Schmoe must go on!

Here is a poorly drawn diagram to help you visualize.
Not drawn to scale & there'd be more trees within the circle.

[click to enlarge]