Define what good is. Good in relation to all chess players, a group, family, or your own goal? What kind of rating?
Is a 1581 rating good ?

Judge yourself. http://www.chess.com/echess/players

What do you think ?
I think 1581 is pretty good for a 13 year old. You have time to improve and become really good!
Me, I'll die a contented patzer, but you can do better.

Thanks; its better than I though.
Sorry @SebbyLeb, but your average opponents are fully 400 points below you in all three rating systems. Clean up your act.
NO, you're a lazy player who (chronically) plays weaker opponents.
Set you rating range at plus and minus 150, then see what happens.
Nice photo, in any case.

You habitually play weak computers in standard chess, too. What's up with that?
Sorry, but that's a complete waste of your time.
Whatever. Knock yourself out.

he probably couldn't talk if you were to wear him.
I fell out of my chair laughing.

I am a 1500ish rated player. I enjoy learning and very competitive games so I tend to look for the 1600 and up players. I have beaten or "tied" a few of the better rated players and have recently added the "tatics training" to my skill development to try to cure my blind spots and knowledge deficiencies. I wouldn't do well in a timed tournament, but I am growing in my tactics and skills. Just as there are tactical skills and playing styles in other games/sports (I am a national ranked table tennis player - just took another medal in the recent Senior Games in Cleveland, OH), training and practice make you more perfect.

"1600 Online" is not very strong. Sorry. That rating wears (sic) poorly.
According to your game score, your average opponents are only rated 1100 in Blitz, Bullet, and Standard. That wears (sic) rather poorly, as well.
Johnan Hellsten's (3 new books) are definitely worth studying. Perhaps you can get Mom to buy them for you?
Consider posting less threads. Improve your game instead. You'll be a better man for it.
Have a Nice Day.
What do you think ?