International migration panel dataset by origin, destination, sex, and education level 

HCM dataset developed by Abdeslam Marfouk (with Herbert Brücker and Stella Capuano) in 2013 provides information on the structure of immigration in 20 OECD countries, by origin and destination, sex and education level, in absolute values and in percentage of source countries labor force (emigration rates) for the years 1980-2010 (5 years intervals). 

The dataset contains three major files:

1. Total number of foreign-born individuals aged 25 years and older, living in each of the 20 considered OECD destination countries, by year, gender, country of origin and educational level. Educational levels are distinguished in low, medium and high skilled.
   
2. Migration by gender: Total number of foreign-born individual (all age groups as a whole), living in each of the 20 considered OECD destination countries, by gender and country of origin.
   
3. Emigration rates: Proportion of migrants over the pre-migration population (defined as the sum of residents and migrants in each source country), by gender, skill level and year. Age group: 25 years and older.

For a description of the dataset see the methodological note
The dataset is publicly and freely accessible through this url: http://www.iab.de/en/daten/iab-brain-drain-data.aspx