List of KDramas and Their Grades

To make your next drama selection a little easier, I have sorted all the Korean dramas I've watched into one list, ranked by grade. They are in no particular order aside from grade at this point, but when I update this list, I will put new entries on the bottom of the corresponding section. 

And here's a link to a list of all the films I've watched if you're in the mood for something quick! 
List of Foreign Films

A

Secret Garden (2010), A+

My Fair Lady (2009), A+

You're Beautiful (2009), A+

Lie to Me (2011), A

My Princess (2011), A

Healer (2015), A

Greatest Love (2011), A

Dramaworld (2015), A
Kill Me, Heal Me (2015), A
Touch Your Heart (2019), A

Flower Boy Ramen Shop (2011), A-

Playful Kiss (2010), A-

The Master's Sun (2013), A-

My Love from Another Star (2014), A-

Big (2012), A-

My Lovely Sam Soon (2005), A-

Hyde, Jekyll, Me (2015), A-

Oh My Venus (2015), A-

Falling in Love with Soon Jung (2015), A-

My Unfortunate Boyfriend (2015), A-

Heartstrings (2011), A-
TDrama Drunken to Love You (2011), A-
Miss Panda and Mr. Hedgehog (2012), A-
Jealousy Incarnate (2016), A-

B

Protect the Boss (2011), B+

My Girlfriend Is A Gumiho [Nine-TailedFox] (2010), B+ 

To The Beautiful You (2012), B+

Rooftop Prince (2012), B+

Personal Taste (2010), B+

Coffee Prince (2007), B+

Heirs (2013), B+

Dream High (2011), B+

Cunning Single Lady (2014), B+

Good Doctor (2013), B+

Sungkyunkwan Scandal (2010), B+

Full House Take 2 (2012), B+

Bride of the Century (2014), B+

Tomorrow's Cantabile (2014), B+

Noble, My Love (2015), B+ 

TDrama Refresh Man (2016), B+

TDrama Who's The One (2011), B+

Descendants of the Sun (2016), B+

Goblin: The Great and Lonely God (2016), B+

Web Drama Go Ho's Starry Night (2016), B+ 
Oh! My Lady (2010), B+
Hotel Del Luna (2019), B+

Cinderella and the Four Knights (2016), B+

Boys Over Flowers (2009), B

Creating Destiny (2009-10), B

A Gentleman's Dignity (2012), B

I Can Hear Your Voice (2013), B

Oh My Ghostess (2015), B

Flower Boys Next Door (2013), B

Clean With Passion For Now (2018), B

Producer (2015), B

Fated to Love You (2014), B
Fated to Love You - Taiwanese (2008), B
Click Your Heart (2016), B 
Another Oh Hae Young (2016), B
My Little Lover (2016), B 
Web Drama Momo Salon (2014), B
Web Drama Spark (2016), B 
One Percent of Something (2016), B
Marriage Not Dating (2014), B
I'm Not A Robot (2017), B
The Legend of the Blue Sea (2017), B
Suspicious Partner (2017), B
Jugglers (2017), B

Jdrama An Incurable Case of Love (2020), B

Extraordinary Attorney Woo (2022), B

Business Proposal (2022), B

Love Cells (2015-16), B-

The Virtual Bride (2015), B-

It's Okay, That's Love (2014), B-

Faith/The Great Doctor (2012), B-

Pasta (2010), B-

Coffee House (2010), B-

Full House (2004), B-
TDrama Murphy's Law of Love (2015), B-
The Sound of Your Heart (2016), B-
JDrama Good Morning Call (2016), B-
Let's Eat (2014), B-
My Horrible Boss (2016), B-
Strong Girl Do Bong-Soon (2017), B-
What's Wrong with Secretary Kim? (2018), B-
Mama Fairy and the Woodcutter (2018), B-
Her Private Life (2019), B-
Melting Me Softly (2019), B-
Emergency Couple (2014), B-

Lucky Romance (2016), B-

Rich Man, Poor Woman (2018), B-

Hometown Cha-Cha-Cha (2021), B-

Hospital Playlist (2020-2021), B-

Revolutionary Love (2017), B-

The Man's Voice (2021), B-

Flower Crew: Joseon Marriage Agency (2019), B-

Anything below a B- I wouldn't watch again or recommend, but the synopsis can help you decide for yourself.

C

JDrama 99 Days With the Superstar (2011), C+

Memorist (2020), C+

Warm and Cozy (2015), C+
My Secret Romance (2017), C+
Me Too, Flower! (2011), C+
Pinocchio (2014), C+

Manny (2011), C+

Cheongdam-dong Alice (2012), C+

Shut Up Flower Boy Band (2012), C+

Prosecutor Princess (2010), C+

Goong/Princess Hours (2006), C+

Dream Knight (2015), C+ 

Madame Antoine (2016), C+

Web Drama My Runway (2016), C+

TDrama When I See You Again (2016), C+
She Was Pretty (2015), C+

Chinese Accidentally in Love (2018), C+

100 Days My Prince (2018), C+

Heartbeat (2023), C+

My Sassy Girl (2017), C

So I Married the Anti-Fan (2021), C

JDrama Happy Marriage!? (2016), C
Pretty Man/Bon Ami (2013), C 

City Hunter (2011), C

Shining Inheritance (2009), C

Dr. Jin (2012), C

Nine: Nine Time Travels (2013), C

Mary Stayed Out All Night (2010), C
Web Drama After School: Lucky or Not 2 (2014), C

ChDrama Love 020 (2016), C

Cheese in the Trap (2015), C-

I'm Sorry, I Love You (2004), C-

Gu Family Book (2013), C-
Seonam Girls High School Investigators (2014), C-
TDrama Bromance (2015), C- 
Color of Women (2012), C- 
My Shy Boss (2017), C-

Vincenzo (2021), C-

Twenty-Five Twenty-One (2022), C-

D

Because This Is My First Life (2017), D+

Mad for Each Other (2021), D+

Dodosolsollalasol (2020), D+

Evergreen/That Man, Oh Soo (2018), D+
Can We Get Married? (2012), D+
Summer Scent (2003), D

Beauty Inside (2018), D

12 Signs of Love (2012), D-

F

In Need of Romance (2011), F

Mine (2021), F