(I'll draw a better one when I have time, lol)

Maybe I should've put this first, oh well

Okay, so there are uh, five main classes

(I thought there were only four, the more you know)

Those five classes are:

-Safe

-Euclid

-Keter (Rhymes with 'Peter', I swear if I hear one more person say keter like it rhymes with better-)

(Except for The Volgun, they're cool)

(I'm getting demonetized for this, aren't I? I don't even earn money for this, lol)

(anyway)

-Thaumiel (No, I don't know how to say it, I didn't even knew it existed until twenty minutes ago)

-Neutralized

So,  Safe SCPs are easily contained, and they *probably* won't kill you, which is my favorite kind of SCP, in my opinion.

Euclid SCPs are uh, weird. 

They're pretty unpredictable-

(oh wait, dummy terms remember??)

(uh)

-and it takes more to contain 'em.

(SCPs are just cursed pokemon, change my mind)

Keter SCPs are the kind of SCPs that appear in my recurring nightmares, they're hard to contain

(hard is an understatement)

I mean, just because it's a keter doesn't mean it's dangerous

it's just hard to keep under lock and key, if ya catch my drift.

Thaumiel SCPs are SCPS that are used to contain other SCPs

(that's it, I'm serious. I did some research, and that's all the noteworthy stuff, that and the fact that the existence of these SCPs is highly classified, so that's fun)

Neutralized SCPs are SCP that aren't SCPs anymore.

To put it simply.

How do you know if a SCP is in (insert class here)?

Well, I'm so glad you asked, random person

Here's a simple test to tell ya.

If you lock said SCP is a box, and it bakes you cookies (or does nothing), then it's *probably* Safe.

If you lock said SCP in a box and you're not sure what the hell it's doing in there, then it's Euclid.

If you lock said SCP in a box, and it breaks out and eats your grandma, then it's Keter.

If it is the box, then it's Thaumiel.

There are a bunch of other classes

(most are used to classify a specific SCP)

But that's a chapter for another day

Well, thanks for reading, assuming you're indeed still reading, and have a lovely day 

(assuming you haven't disappeared into the nether)

UPDATE on the box thing: Apollyon

If you lock said SCP into a box, and it sets the box on fire, escapes, and makes everyone dead, resurrects everyone that ever existed, and then makes everyone compete in a sadistic version of the Hunger Games, and then makes a end-of-the-world scenario, it's Apollyon.