Specialty Coffee Grading : SCA Standards Explained

The Specialty Coffee Association (SCA) sets the specialty coffee grading standards used worldwide to classify, score, and evaluate coffee quality. When a coffee is labeled specialty grade, it scored 80 points or above on the SCA's 100-point cupping scale, evaluated by a certified Q Grader using the SCA cupping protocol. Below 80 points, a coffee does not qualify as specialty grade regardless of its price or marketing.

The SCA was formed in 2017 when the SCAA and SCAE merged. Their standards cover green coffee grading, cupping protocol, and brewing standards. For more on what specialty grade means in practice when you are buying coffee, see our post on what is specialty coffee.

The SCA 80-Point Scale

Green Coffee Grading: The Defect System

The specialty coffee grading process evaluates unroasted beans from a 300-gram sample. Primary defects (full blacks, full sours, fungus damage) and secondary defects (partial blacks, broken beans, insect damage) are counted separately. To qualify as specialty grade, the sample must have zero primary defects and no more than 5 secondary defects, and the roasted coffee must cup above 80 points. Both standards must be met.

The defect threshold is strict because even a small number of defective beans affects the flavor of the entire roasted lot. A single full black in a batch introduces off-flavors a trained taster identifies clearly. The limit ensures consistent quality from the entire lot, not just the best beans in it. For more on how origin and processing connect to defect levels, see our post on what makes Ka'u coffee exceptional.

How the SCA Cupping Protocol Works

SCA cupping specifies: 8.25 grams per 150ml of water, water temperature of 93 degrees Celsius (200°F), 4-minute steep, crust broken at 4 minutes, tasting after the coffee cools to 71 degrees Celsius. The Q Grader scores ten attributes as part of the specialty coffee grading protocol: fragrance and aroma, flavor, aftertaste, acidity, body, balance, uniformity, cleanliness, sweetness, and overall. Maximum possible score is 100. Specialty grade threshold is 80.

Q Graders are certified by the Coffee Quality Institute through a rigorous multi-day examination. There are approximately 7,000 certified Q Graders worldwide. For more on developing your own palate to taste these attributes, see our post on how to develop your coffee palate.

SCA Brewing Standards

The SCA Brewing Control Chart defines quality brewed coffee as having a strength (total dissolved solids) between 1.15% and 1.35% and an extraction yield between 18% and 22%. Brew temperature should be 91 to 96 degrees Celsius (195 to 205°F). These parameters apply to drip and filter coffee. For home brewers, the practical takeaway is: correct water temperature, correct ratio, fresh specialty-grade beans. For more on what water temperature means for pour over specifically, see our gooseneck kettle guide.

Frequently Asked Questions Specialty Coffee Grading: Common Questions

What is specialty coffee grading?

Specialty coffee grading is the process of evaluating coffee quality through physical defect inspection and sensory scoring. The Specialty Coffee Association sets the standards. A coffee must score 80 points or above on the SCA's 100-point cupping scale and have zero primary defects in a 300-gram green sample to qualify as specialty grade.

What is the SCA 80-point scale?

The SCA 80-point scale is the global standard for scoring coffee quality. A certified Q Grader evaluates ten attributes: fragrance and aroma, flavor, aftertaste, acidity, body, balance, uniformity, cleanliness, sweetness, and overall impression. Scores of 80 to 84.99 are Very Good, 85 to 89.99 are Excellent, and 90 and above are Outstanding. Any coffee scoring below 80 is not specialty grade.

What is a Q Grader?

A Q Grader is a coffee professional certified by the Coffee Quality Institute to evaluate coffee using the SCA cupping protocol. Certification requires passing a multi-day examination covering sensory skills, green coffee grading, and cupping calibration. There are approximately 7,000 certified Q Graders worldwide.

What are primary and secondary coffee defects?

Primary defects are serious flaws in green coffee that significantly affect flavor. They include full black beans, full sour beans, and fungus-damaged beans. Secondary defects are less severe and include partial blacks, broken beans, and insect damage. To qualify as specialty grade, a 300-gram sample must have zero primary defects and no more than 5 secondary defects.

What is the difference between specialty grade and commercial grade coffee?

Specialty grade coffee scores 80 points or above on the SCA cupping scale and passes the green coffee defect threshold. Commercial grade coffee scores below 80 and is produced for volume and consistency rather than cup quality. Commercial coffee is rarely traceable to a specific farm or region and is typically sold by brand rather than origin.

Start With Specialty-Grade Sourcing

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Learn more about how Blackout sources and roasts on the About Blackout Coffee page.