How to generate a file with BOM for multiple schematics - EAGLE
File &gt; Import &gt; Eagle drawing &gt; select the schematics that you want to import


Each schematic will be a new page (you should see them on the left menu numbered as 1,2,3) then click on

File &gt; Export &gt; BOM 


Then select values and CSV file type (shown below). CSV is an universal file format that you can open with Excell or Open Office (or a text editor). 



If you use Excell, then you can use =SUM() command to get the number of components.