In Pokémon Black Version 2 I train my Pokémon by battling a lot Audino in the wild , a Level 30 Audino gives you like 3000 exp .

I battle other in game trainers, try to avoid the tall wild grass, and try to keep every Pokémon's level close to the same.

Hidden Phantom : There's a harder mode in the new Pokémon games? Sweet. Well, what I do is first, use Pokémon that I will not use, and at the same time, get some Pokémon that I will want to use, and keep them in the PC at first. I'll train up to the E4 with my weaker Pokémon, just battling in the grass if I'm too weak. Then, with my good Pokémon, I EV train them, then I just level them up any way I can. And since their EVs are maxed out, I can use Rare Candies if I want to.

I would just fight random trainers and wild Pokémon. It is fast and easy and also works.

I fight wild Pokemon and battling other trainers mostly, usually trainers are better exp though.

supercool22 : Honestly I breed my pokemon on my other game so it has a other ID number. That way it can level faster and with a lucky egg and audino's, it levels like a boss :3

i go to the pokemon league and put a exp share on the pokemon i want to level up. i also use the training guy at join avenue but first i upgrade their stats then i buy the level up.i also battle my rival and cynthia

i train on emerald with cheats.. its weak but.
i dont care about lv 100 pokemon. i just use cheats to train my pokemon's state.
if i train a swallow. i most likely use the pokemon cheat to fight ninjask or crobat.
crobat gives 3 points on speed. so swallow with timid or jolly would train perfect there.
i also train again pokemon 5 lv's lower or higher. so the exp wont be to low but good eneugh to train it lv and stats without the stats points suffering.
its kinda uncool to use gamesharks or anything. i know that. but i dont care about cheating. like infinite rare candies or masterballs.. i hate these kind of codes.
i only use move aditor codes and wild pokemon codes. so i can give my pokemon the perfect moves to use during training. and train the right stats.
i'v got a lv 100 slaking(adamant) with 453 attack. slaking max attack is 460.
so thats the effect of training your pokemon against the right oponents.
other example my lv 100 armaldo(brave) with 369 attackt the max attack of armaldo is 383
this might look like nothing special. but i did train an other armaldo(adamant) only using rarecandies. and he only got a attack of 330. a differance of 39 attack points.
One last example would be my cradily with 336 special def.
the max sp def of cradily 344. close call right?.
i hope people dont think this is off topic. this is just my way of training pokemons

In Black and White 2 I trade my team with my friend to get double EXP than go to the big stadium and the small court on Challenge mode to get Pokémon from 60 to 65. These Pokémon get between 1,000 and 8,000 with each Pokémon they defeat. You also get very rare items by battling the people. PLUS there are from 5 to 10 people in each every day. The training here is awesome, I got a Pokémon from LV 27 to LV 66 in one day with this and he only battled half of the people. So overall this is the best place to train. In the wild the highest amount of EXP I have ever gotten is 3,000 and that has been with trading and with the lucky egg. After you have finished the big stadium and small court for the day you should head over in to the Pinwheel Forest, as it is the second best training in the game. There is also the Elite 4 and the Champion.
Although they get you so much EXP for your Pokémon they are very hard and if you loose they take a whole lot of your money. Battling them for the second time is good for your Pokémon but not good for your pocket. After this there are the Trio Gym leaders. They have high levels and get you good EXP you can only do one double battle a day. In the long run this will not help you very much, as you will only get between 5,000 and 7,000 EXP in one battle. Training in this game is very easy unlike in Black and White. You can train from 20 to 45 in just 10 min using my method. If you want to train your Pokémon fast than just use these tips. There are other ways but these are just the best. Hidden Grottos also work but rarely will you find a Pokémon in there and the Pokémon don't get you much EXP because they are either weak or you catch them. I hope these tips are helpful to anyone who reads them, just follow them and you will be strong trust me.

Well I usually use the exp share and a lucky egg but sometimes in games that support match calls I would keep doing that then other times in games that don't have match calls I would just keep challenging the elite four.

You know the advantage of types but Where and HOW do you train. Look at my above post.

Type advantage , exp. share and I train the old fashion was , defeat  wild Pokemon .

To train my Pokemon I use the experience share when possible and just battling weaker Pokemon in small grass.  

Local Mods : this thread of my was seriously bumped so I'm requesting this thread to closed. Thank you.

Well what I do is go to a place where the Pokémon levels are around my own. Sometimes I event value train though which mean you train with certain Pokémon to get different level up stats.