Evaluation World partners with immigration attorneys to provide USCIS-compliant expert opinion letters for EB2-NIW, EB-1, O-1, and L-1 petitions. 170+ PhD-level experts. Fast turnaround. Proven results.
Tell us about your practice — we'll respond within 24 hours.
We understand your practice. Every letter we produce is designed to support your legal strategy, not just check an evidentiary box.
Published professors, researchers, and industry specialists across STEM, healthcare, business, social sciences, and 50+ fields. We can match virtually any client's field of endeavor with a credentialed, independent expert.
You tell us which Dhanasar prongs to emphasize. We align the expert's analysis with your legal strategy. The result is a letter that strengthens your argument — not one that works against it.
Standard delivery in 7–10 business days. Rush delivery in 3–5 days for RFE deadlines. We hit our deadlines so you can hit yours — no missed USCIS windows.
Every letter replaces vague praise with verifiable data — citations, metrics, statistics, and measurable outcomes. We write for USCIS adjudicators, not for the petitioner's ego.
Special pricing for attorneys with recurring case volume. The more cases you send, the better the rate. Contact us for a custom volume arrangement that fits your practice.
Every letter includes free revisions. If you need adjustments to align with a shifted legal strategy, we make them. Your satisfaction is non-negotiable.
One partner for every employment-based petition in your practice.
| Visa Type | Letter Focus | RFE/Denial Support | Rush Available |
|---|---|---|---|
| EB2-NIW | Dhanasar 3-prong analysis: merit, positioning, balancing test | ✓ | ✓ |
| EB-1A | Extraordinary ability analysis across applicable criteria | ✓ | ✓ |
| EB-1B | Outstanding researcher/professor credentials assessment | ✓ | ✓ |
| O-1 | Extraordinary ability in sciences, arts, business, athletics | ✓ | ✓ |
| L-1A / L-1B | Managerial/executive capacity or specialized knowledge | ✓ | ✓ |
| H-1B | Specialty occupation, wage level, beneficiary qualifications | ✓ | ✓ |
We're not just a vendor — we're an extension of your legal team. Every engagement starts with understanding your strategy, and every letter is built to reinforce it.
Whether you're filing an initial petition, responding to an RFE, or appealing a denial, we adapt our approach to fit the specific needs of each case.
Attorneys can send cases directly, provide strategic guidance on emphasis areas, review expert CVs before engagement, and approve final letters before delivery — giving you full control over the evidentiary product your clients receive.
Share the petition materials, your strategic focus areas, and any specific prongs or criteria you want emphasized. For RFEs, include the notice.
We recommend the best-qualified expert and provide their CV for your review. You approve the expert before any drafting begins.
The expert drafts a detailed opinion letter aligned with your legal argument and the applicable framework (Dhanasar, specialty occupation, extraordinary ability, etc.).
You review the draft, request any changes, and we revise — free of charge. Final delivery is a signed letter on expert letterhead, ready for filing.
We offer a full range of evaluation services to support your immigration practice.
Foreign credential equivalency reports stating the U.S. equivalent of your client's education.
Course-by-course analysis with U.S. GPA equivalency for academic credentials.
Fast, accurate certified translations for educational documents, certificates, and official records.
Join the immigration attorneys who trust Evaluation World for expert opinion letters across every employment-based visa type.