Did Karev pass his boards?
As the end of the fifth year of residency is near, the surgical residents, including Alex, prepare for their board exams for the different fellowships they plan on joining. Though Alex is late for his exam, because he had to treat a patient, he ends up passing.
Alex ultimately passed, meaning he got perfect scores on his second and third sessions.
She Passes Her Board Exams In June
In season 10, April finally passes her board exams after initially failing them at the end of season 8, after her one-night stand with Jackson.
April Fails Her Board Exams
Because April slept with Jackson (and lost her virginity to him), she has a hard time during the exam and does really badly. This is a sad moment for the character, who is a perfectionist and never thought that this would happen to her.
As the end of the fifth year of residency is near, the surgical residents, including Yang, prepare for their medical boards and for the different fellowships they plan on joining. After she passes her exams, Yang reconciles with Hunt and tells him she is leaving Seattle for the Mayo Clinic, Minnesota.
Let the Bad Times Roll.
10 He Failed His Boards
A few months into Alex's intern year, The Chief of Surgery approached Alex to inform him that he'd failed the medical boards. His exam results arrived later than everyone else's, he was matched with Seattle Grace Hospital with the assumption that he passed his exam.
O'Malley moves in with new intern Lexie Grey (Chyler Leigh), Meredith's half-sister. Lexie and O'Malley discover that he failed his exam by only a single point, leading him to confront Richard Webber (James Pickens Jr.), the chief of surgery, to ask for a chance to retake the exam.
She Failed Her Intern Exam…
The year 2007 was a rough one for Meredith Grey. Her stepmother passed away from a case of the hiccups, her father blamed her for the loss of his wife, her mom passed away, and she literally passed, and understandably, she cracked under pressure.
4. April Kepner. April's been fired not once, but twice. She received the ax in season six along with Izzie during the merger after making a fatal mistake, but Derek rehired her because he was impressed with her as a surgeon.
Is Jackson Avery double board certified?
According to the @GreysMedical twitter, Jackson Avery is double-board certified in plastics and ENT like Mark, later confirmed in show's dialogue.
April later wanted nothing to do with Jackson romantically after feeling guilty for betraying her promise to God. April had left after the tragic plane crash that claimed the lives of Lexie and Mark.

Addison Forbes Montgomery (formerly Montgomery-Shepherd) is a double board-certified OB/GYN, subspecializing in maternal-fetal medicine/fetal surgery, a neonatal surgeon (one of the foremost in the country) and a medical geneticist at the Seaside Health and Wellness.
Avery, Meredith Grey, Cristina Yang (Sandra Oh), and Alex Karev eventually pass their boards, while Kepner fails. Although Avery has true feelings for her, she pushes him away because she believes that he feels guilty for having sex with her.
Given all the relationship and work drama that unfolds, it's hard for the casual viewer to know how the hospital is structured. Jackson Avery and Meredith Grey serve as board directors. Meredith also serves as the chairperson. Other board members are Miranda Bailey and Richard Webber.