Riddle

[Dee-M-See]

I am dark with white markings as smooth as glass
Learn my purpose and you may pass
What am I?

[mac44]

Maybe a Blackboard.

[Dee-M-See]

Thanks mac44 sounds a better answer than what I was thinking
I though maybe a Zebra crossing but the smooth as glass bit didn't seem right

[mac44]

The "Learn my purpose and you may pass" made me think of school.

[beerbelly]

Better than my train of thought .
Newcastle united's defence . lol
sorry .....

[crofter]

beerbelly, You got the wrong riddle. You're thinking of:

We're dressed all in white with stripes black as coals
We give away free kicks and plenty of goals!

... and I am a committed NUFC supporter!

[Dee-M-See]

Blackboard was the correct answer
I f you think Newcastles defence is bad what about me
I am a Leeds supporter
but thanks for your answers