My alma mater for the MA is Maranatha Baptist Bible College, which is regionally accredited and therefore has very high standards for scholarship, higher than BJU I believe. BJ has just recently gotten TRACS accreditation, to my understanding, which has somewhat lower standards than regional accreditation.
Other IFB schools with high standards of scholarship include Northland (TRACS), Calvary Baptist Theological Seminary (TRACS), Calvary Baptist Theological Seminary (regional), etc. Detroit Baptist Theological Seminary does not have accreditation, but does produce a scholarly journal with good content.
There are plenty of IFB scholars with worthy degrees. The reasons you don't read many articles in the evangelical journals by them are: (1) We often have our own journals. (2) Unfortunately, IFB schools are usually not big enough to afford paying research profs like the big schools (Kostenberger at SEBTS, Carson at Trinity, etc.). (By the way, my IFB scholar son now has four articles, I think it is, published in major theological journals.)