Here are some tip's I have found through trial and error:
Find a reliable time to study Korean outside of home.

Personally, I have a friend at my Korean school to help me at the end of the day for about 20 minutes or so and then I can go home and review it.
To supplement his classes I listen to a Korean Podcast while I run
In the past I have used coffee shops and Libraries to get me off my arse and study in a good environment
Use your MP3 player for more than Beyonce

My Free Podcast is Korean101. You can download all the dialogues for free from:
http://www.koreanclass101.com/
I recommend signing up for the free trial so you can look at some of the PDF's that are useful. In fact if you sign up for the free trial you will receive a bunch of emails offering "deals". Resist them until you get the one that say's 'name your price' and then you can have a whole month for $1. In this time you can download the lesson content you need for a long time.
Newbie1 + 2 are great, funny and dead simple
Beginner classes are more in depth on grammar and longer dialogues
The feeling you get when you start to understand the dialogues and then real-life is fantastic
Don't knock Language Games

There are some dead simple Korean vocab games on:
http://www.genkienglish.net/speakkorean/
Elementary Kids

Kids speak quickly and they may not understand your lack of Korean as they fire a billion Q's your way but with the study tips mentioned above they are the best way to practice.
Don't be afraid to use a bit of Korean in class or ask the kids the Korean for what you are teaching. The kids enjoy it even if you get it wrong.
Lunch Time

So maybe your an English teacher but that doesn't mean you can't practice your Korean with your students. The best time for this is during lunch. Sit with the kids (mingle) and ask simple questions you've learned.
It doesn't take much to become a Korean novice and that's all that most expect of you but if you go that one step more you will enjoy and learn much more about the culture through the language
Good luck and here's a few more free links worth a browse:
http://korean.sogang.ac.kr/
http://survivalphrases.com/korean/guest.php